US PATENT SUBCLASS 526 / 72
.~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING

Current as of: June, 1999
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526 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {8}
72.~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43}
73  DF  .~.~> Polymerization involving two or more specified temperature or pressure conditions
74  DF  .~.~> Utilizing material during polymerization to prevent or remove reactor buildup, e.g., fouling, clogging, etc.
75  DF  .~.~> Including step of synthesis of monomer or pre-polymer {1}
77  DF  .~.~> Including step of purifying monomer
78  DF  .~.~> Adding material to an on-going polymerization reaction, said addition being other than the continuous addition of the initial charge {4}
88  DF  .~.~> Polymerization involving specified mixing, stirring, agitating, or movement of material
89  DF  .~.~> Polymerizing in the presence of a specified material other than monomer {28}
238.1  DF  .~.~> From protein or biologically active polypeptide containing monomer
238.2  DF  .~.~> From carbohydrate, tannin, or derivative containing monomer {3}
238.3  DF  .~.~> From natural resin or derivative containing monomer
239  DF  .~.~> From boron containing monomer
240  DF  .~.~> From metal containing monomer {1}
242  DF  .~.~> From fluorine containing monomer {7}
256  DF  .~.~> From monomer containing sulfur atom as part of a heterocyclic ring {1}
258  DF  .~.~> From monomer containing nitrogen atom as part of a heterocyclic ring {6}
266  DF  .~.~> From monomer containing oxygen as part of a heterocyclic ring {5}
274  DF  .~.~> From monomer containing a phosphorus atom {3}
279  DF  .~.~> From monomer containing a silicon atom
280  DF  .~.~> From fused or bridged ring containing monomer {2}
285  DF  .~.~> From monomer containing an acetylenic group
286  DF  .~.~> From S-containing monomer {3}
290  DF  .~.~> Monomer from unsaturated petroleum hydrocarbon fraction; from unsaturated coal or bituminous material, extract, or derivative thereof; or from unsaturated fatty still residue
291  DF  .~.~> From halogen containing monomer having at least three carbon atoms {7}
296  DF  .~.~> From bromine or iodine containing monomer, dichloroethylene, trichloroethylene or tetrachloroethylene
297  DF  .~.~> From nitrile group containing monomer other than acrylonitrile or methacrylonitrile {3}
301  DF  .~.~> From monomer containing a >N-C(=O)-O- group, e.g., carbamic acid, etc.
302  DF  .~.~> From monomer containing a >>N-C(=O)-N<< or >>N-C(-O)-N<< group e.g., urea, isoureau, etc.
303.1  DF  .~.~> From carboxylic acid amide-containing monomer {9}
308  DF  .~.~> From cycloaliphatic monomer {1}
310  DF  .~.~> From nitrogen containing monomer other than acrylonitrile or methacrylonitrile {2}
313  DF  .~.~> From phenol, phenol ether, or inorganic phenolate monomer
314  DF  .~.~> From monomer containing a carbonate group, i.e., -O-C(=O)-O-
315  DF  .~.~> From aldehyde monomer
316  DF  .~.~> From ketone or ketene monomer
317.1  DF  .~.~> From carboxylic acid monomer {7}
319  DF  .~.~> From carboxylic acid ester monomer {6}
332  DF  .~.~> From monomer containing an ether group {2}
335  DF  .~.~> From hydrocarbon monomer containing at least two ethylenic groups, e.g., butadiene, etc. {9}
341  DF  .~.~> From acrylonitrile or methacrylonitrile {1}
343  DF  .~.~> From vinylidene chloride
344  DF  .~.~> From vinyl chloride {4}
346  DF  .~.~> From aromatic hydrocarbon {3}
348  DF  .~.~> From hydrocarbon {6}

DEFINITION

Classification: 526/72

(under subclass 1) Subject matter under Class 520, ... involving polymers derived from ethylenically unsaturated monomers only and processes of polymerizing same; polymerizing compositions containing ethylenically unsaturated monomers only and processes of preparing polymerizable compositions.

(1) Note. This subclass provides for processes wherein an ethylenically unsaturated monomer is undergoing polymerization and concurrently therewith is reacting with a second ethylenic material, which second ethylenic material does not enter into the polymer backbone, e.g., polymerizing acrylic acid in the presence of allyl alcohol so that the final polymer is a polymerized acrylic acid having ester groups which are derived from the unsaturated alcohol.

(2) Note. The sole requirement for the products of this subclass is that the polymerization reaction involve only ethylenic unsaturated monomers. Note, however, that the actual polymerization mechanism need not involve the ethylenically unsaturated group (e.g., polymerization of a glycidyl methylacrylate may involve the double bond in one instance and in another instance may involve the ring opening of the epoxy group, etc.).

(3) Note. This subclass and its indents provide for processes for adding material to an ongoing polymerization process or where preformed liquid polymers are further polymerized so as to form a final polymerized product.

SEE OR SEARCH CLASS

525, Synthetic Resins or Natural Rubbers, 242+, for products resulting from or involving a polymer derived from only ethylenic monomers reacted with an ethylenically unsaturated reactant, or for products resulting from or involving a polymer derived from at least only ethylenic monomers reacted in the presence of an ethylenically unsaturated monomer. Subclasses 242+ also provides for the processes of preparing products properly classifiable within the subclass.

528, Synthetic Resins or Natural Rubbers,

480+, for processes of treating a polymer not involving a chemical modification of the polymer, by the addition of a material thereto and for chemically modifying materials other than the ethylenic polymer. Subclasses 480+ also provide for the processes of admixing with a broadly claimed nonreactant material.